Wake effects are important. Please calaculate OK wake effect 94% That's not too bad ! Remember: Offshore wake decay is different Low turbulence: Probably 0.04 What ! That's bad ! Compromize: Wake induced turbulence included Wake decay 0.05 OK â what is it? OK wake effect 88% OK wake effect 90%
Steel Mills Use Manganese: The most important use of manganese is in the manufacturing of steel. Manganese gives the steel strength and hardness. Without manganese, the steel used to make armor plate, crusher jaws, and impact tools would not be as durable. Image Â© iStockphoto / Huyangshu.
Railroad tracks, for example, are made with steel that contains as much as 1.2% manganese. Manganese is also used to give glass an amethyst color and is responsible for the color of amethyst gemstones. Manganese dioxide (MnO 2), the most common compound of manganese, makes up about 0.14% of the Earth's crust. It is used in dry cell batteries to prevent the formation of hydrogen, to remove the green color in glass that is caused by the presence of iron contaminants, and as a drying agent in black paints.